Viewing a single comment thread. View all comments

jschubart t1_j3xffn6 wrote

Reply to comment by isthatmyex in NASA satellite discovers second Earth-sized planet in habitable zone by Tuna_Sushi

If you traveled at the speed of light, you would need to not have any mass. If you were to travel near the speed of light (e.g. 99.9% the speed of light), to you about 4.5 years would have passed. To everyone else, 100 years would have passed.

Here is a nice calculator:

https://www.omnicalculator.com/physics/time-dilation

8